The Spain international has spearheaded Jose Mourinho's side to the top of the Premier League standings heading into the international break, netting four goals in his first three games since moving from Atletico Madrid for 32 million pounds earlier this summer.

The 25-year-old striker's record is all the more impressive when you consider that it took Fernando Torres 39 games to reach the same four-goal tally and Costa now hopes to transfer that impressive club form onto the international stage as he targets a first goal for his adopted nation Spain.

"Things are going well with the football; the weather is another matter [laughs]. Mourinho, all good. I get along really well with him. There are no problems at all," he said, as reported by AS.

Costa has been called up to Vicente del Bosque's squad for the upcoming matches against France and Macedonia and is determined to atone for Spain's and his own personal disappointing performances at the World Cup in Brazil.

"It's very important that the manager counts on you and I'm motivated to do things well to keep getting called up. It's time I played well and scored," he added.

"What happened, happened and we have to move on. Sometimes you win, sometimes you lose. That's football.

"We have to look forward. With the team we had, we could have gone far, maybe even won it, but we couldn't."

Valencia forward Paco Alcacer is the only other forward called up to the La Roja squad for their opening Euro 2016 qualifier against Macedonia and Costa admits that he is under pressure to perform as there are a host of big names ready to take his place.

"I will try to do things well. [Fernando] Torres, [David] Villa and [Alvaro] Negredo are great strikers. They can get back into the team but there are also new people who can bring a lot to the side."